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at_proto.c revision 1.15.22.1
      1  1.15.22.1      yamt /*	$NetBSD: at_proto.c,v 1.15.22.1 2008/05/18 12:35:28 yamt Exp $	*/
      2        1.1  christos 
      3        1.1  christos /*
      4        1.1  christos  * Copyright (c) 1990,1991 Regents of The University of Michigan.
      5        1.1  christos  * All Rights Reserved.
      6        1.1  christos  *
      7        1.1  christos  * Permission to use, copy, modify, and distribute this software and
      8        1.1  christos  * its documentation for any purpose and without fee is hereby granted,
      9        1.1  christos  * provided that the above copyright notice appears in all copies and
     10        1.1  christos  * that both that copyright notice and this permission notice appear
     11        1.1  christos  * in supporting documentation, and that the name of The University
     12        1.1  christos  * of Michigan not be used in advertising or publicity pertaining to
     13        1.1  christos  * distribution of the software without specific, written prior
     14        1.1  christos  * permission. This software is supplied as is without expressed or
     15        1.1  christos  * implied warranties of any kind.
     16        1.1  christos  *
     17        1.1  christos  * This product includes software developed by the University of
     18        1.1  christos  * California, Berkeley and its contributors.
     19        1.1  christos  *
     20        1.1  christos  *	Research Systems Unix Group
     21        1.1  christos  *	The University of Michigan
     22        1.1  christos  *	c/o Wesley Craig
     23        1.1  christos  *	535 W. William Street
     24        1.1  christos  *	Ann Arbor, Michigan
     25        1.1  christos  *	+1-313-764-2278
     26        1.1  christos  *	netatalk (at) umich.edu
     27        1.1  christos  */
     28        1.3     lukem 
     29        1.3     lukem #include <sys/cdefs.h>
     30  1.15.22.1      yamt __KERNEL_RCSID(0, "$NetBSD: at_proto.c,v 1.15.22.1 2008/05/18 12:35:28 yamt Exp $");
     31        1.1  christos 
     32        1.1  christos #include <sys/param.h>
     33        1.1  christos #include <sys/systm.h>
     34        1.1  christos #include <sys/protosw.h>
     35        1.1  christos #include <sys/domain.h>
     36        1.1  christos #include <sys/socket.h>
     37        1.1  christos 
     38        1.1  christos #include <sys/kernel.h>
     39        1.1  christos #include <net/if.h>
     40        1.1  christos #include <net/radix.h>
     41        1.1  christos #include <net/if_ether.h>
     42        1.1  christos #include <netinet/in.h>
     43        1.1  christos #include <net/route.h>
     44        1.1  christos 
     45        1.1  christos #include <netatalk/at.h>
     46        1.1  christos #include <netatalk/ddp.h>
     47        1.1  christos #include <netatalk/at_var.h>
     48        1.1  christos #include <netatalk/ddp_var.h>
     49        1.1  christos #include <netatalk/at_extern.h>
     50        1.1  christos 
     51        1.6      matt DOMAIN_DEFINE(atalkdomain);	/* forward declare and add to link set */
     52        1.1  christos 
     53  1.15.22.1      yamt PR_WRAP_USRREQ(ddp_usrreq)
     54  1.15.22.1      yamt #define	ddp_usrreq	ddp_usrreq_wrapper
     55  1.15.22.1      yamt 
     56        1.5      matt const struct protosw atalksw[] = {
     57        1.1  christos     {
     58       1.12      matt 	.pr_type = SOCK_DGRAM,
     59       1.12      matt 	.pr_domain = &atalkdomain,
     60       1.12      matt 	.pr_protocol = ATPROTO_DDP,
     61       1.12      matt 	.pr_flags = PR_ATOMIC|PR_ADDR,
     62       1.12      matt 	.pr_output = ddp_output,
     63       1.12      matt 	.pr_usrreq = ddp_usrreq,
     64       1.12      matt 	.pr_init = ddp_init,
     65        1.1  christos     },
     66        1.1  christos };
     67        1.1  christos 
     68       1.12      matt struct domain atalkdomain = {
     69       1.11    dyoung 	.dom_family = PF_APPLETALK,
     70       1.11    dyoung 	.dom_name = "appletalk",
     71       1.11    dyoung 	.dom_init = NULL,
     72       1.11    dyoung 	.dom_externalize = NULL,
     73       1.11    dyoung 	.dom_dispose = NULL,
     74       1.11    dyoung 	.dom_protosw = atalksw,
     75       1.13    dyoung 	.dom_protoswNPROTOSW = &atalksw[__arraycount(atalksw)],
     76       1.11    dyoung 	.dom_rtattach = rn_inithead,
     77       1.11    dyoung 	.dom_rtoffset = 32,
     78       1.11    dyoung 	.dom_maxrtkey = sizeof(struct sockaddr_at),
     79       1.11    dyoung 	.dom_ifattach = NULL,
     80       1.11    dyoung 	.dom_ifdetach = NULL,
     81       1.11    dyoung 	.dom_ifqueues = { &atintrq1, &atintrq2 },
     82       1.11    dyoung 	.dom_link = { NULL },
     83       1.11    dyoung 	.dom_mowner = MOWNER_INIT("",""),
     84       1.14    dyoung 	.dom_sa_cmpofs = offsetof(struct sockaddr_at, sat_addr),
     85       1.14    dyoung 	.dom_sa_cmplen = sizeof(struct at_addr),
     86       1.14    dyoung 	.dom_rtcache = LIST_HEAD_INITIALIZER(atalkdomain.dom_rtcache)
     87        1.1  christos };
     88       1.13    dyoung 
     89       1.13    dyoung int
     90       1.13    dyoung sockaddr_at_cmp(const struct sockaddr *sa1, const struct sockaddr *sa2)
     91       1.13    dyoung {
     92       1.13    dyoung 	int rc;
     93       1.13    dyoung 	uint_fast8_t len;
     94       1.13    dyoung 	const uint_fast8_t addrofs = offsetof(struct sockaddr_at, sat_addr),
     95       1.13    dyoung 			   addrend = addrofs + sizeof(struct at_addr);
     96       1.13    dyoung 	const struct sockaddr_at *sat1, *sat2;
     97       1.13    dyoung 
     98       1.13    dyoung 	sat1 = satocsat(sa1);
     99       1.13    dyoung 	sat2 = satocsat(sa2);
    100       1.13    dyoung 
    101       1.13    dyoung 	len = MIN(addrend, MIN(sat1->sat_len, sat2->sat_len));
    102       1.13    dyoung 
    103       1.13    dyoung 	if (len > addrofs &&
    104       1.13    dyoung 	    (rc = memcmp(&sat1->sat_addr, &sat2->sat_addr, len - addrofs)) != 0)
    105       1.13    dyoung 		return rc;
    106       1.13    dyoung 
    107       1.13    dyoung 	return sat1->sat_len - sat2->sat_len;
    108       1.13    dyoung }
    109